From: Matthew Wilcox <willy@infradead.org>
To: Brian Cain <bcain@quicinc.com>
Cc: Nathan Chancellor <nathan@kernel.org>,
kernel test robot <lkp@intel.com>,
"llvm@lists.linux.dev" <llvm@lists.linux.dev>,
"kbuild-all@lists.01.org" <kbuild-all@lists.01.org>,
Linux Memory Management List <linux-mm@kvack.org>,
"linux-hexagon@vger.kernel.org" <linux-hexagon@vger.kernel.org>,
Sid Manning <sidneym@quicinc.com>
Subject: Re: [linux-next:master 9995/11651] fs/buffer.c:2254:5: warning: stack frame size (2144) exceeds limit (1024) in 'block_read_full_folio'
Date: Tue, 17 May 2022 05:48:30 +0100 [thread overview]
Message-ID: <YoMpHlVdH+HCMhUj@casper.infradead.org> (raw)
In-Reply-To: <SN6PR02MB4205A0695B4B2543A9B981FCB8CE9@SN6PR02MB4205.namprd02.prod.outlook.com>
On Tue, May 17, 2022 at 04:16:45AM +0000, Brian Cain wrote:
> > -----Original Message-----
> > From: Nathan Chancellor <nathan@kernel.org>
> ...
> > As a side note... Brian, is there any reason for 256K pages to exist for
> > Hexagon? This has been an option since Hexagon's introduction but is it
> > actually used? 4K pages is the default and the help text says "use with
> > caution". Perhaps the choice should be turned off altogether for
> > CONFIG_COMPILE_TEST so that we cannot select this configuration and
> > bother developers with these reports.
>
> It's not the most commonly used page size, yeah. Ok, we will disable it for CONFIG_COMPILE_TEST.
Maybe the stack size limit could be raised for 256KB page size?
Presumably the minimum stack size is 256KB, so it's not a problem for an
individual function to consume 16KB of stack space?
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <willy@infradead.org>
To: kbuild-all@lists.01.org
Subject: Re: [linux-next:master 9995/11651] fs/buffer.c:2254:5: warning: stack frame size (2144) exceeds limit (1024) in 'block_read_full_folio'
Date: Tue, 17 May 2022 05:48:30 +0100 [thread overview]
Message-ID: <YoMpHlVdH+HCMhUj@casper.infradead.org> (raw)
In-Reply-To: <SN6PR02MB4205A0695B4B2543A9B981FCB8CE9@SN6PR02MB4205.namprd02.prod.outlook.com>
[-- Attachment #1: Type: text/plain, Size: 864 bytes --]
On Tue, May 17, 2022 at 04:16:45AM +0000, Brian Cain wrote:
> > -----Original Message-----
> > From: Nathan Chancellor <nathan@kernel.org>
> ...
> > As a side note... Brian, is there any reason for 256K pages to exist for
> > Hexagon? This has been an option since Hexagon's introduction but is it
> > actually used? 4K pages is the default and the help text says "use with
> > caution". Perhaps the choice should be turned off altogether for
> > CONFIG_COMPILE_TEST so that we cannot select this configuration and
> > bother developers with these reports.
>
> It's not the most commonly used page size, yeah. Ok, we will disable it for CONFIG_COMPILE_TEST.
Maybe the stack size limit could be raised for 256KB page size?
Presumably the minimum stack size is 256KB, so it's not a problem for an
individual function to consume 16KB of stack space?
next prev parent reply other threads:[~2022-05-17 4:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-14 16:23 [linux-next:master 9995/11651] fs/buffer.c:2254:5: warning: stack frame size (2144) exceeds limit (1024) in 'block_read_full_folio' kernel test robot
2022-05-14 16:28 ` Matthew Wilcox
2022-05-14 16:28 ` Matthew Wilcox
2022-05-14 21:57 ` Nathan Chancellor
2022-05-14 21:57 ` Nathan Chancellor
2022-05-15 0:30 ` Matthew Wilcox
2022-05-15 0:30 ` Matthew Wilcox
2022-05-15 0:30 ` Matthew Wilcox
2022-05-16 10:09 ` [kbuild-all] " Chen, Rong A
2022-05-17 4:16 ` Brian Cain
2022-05-17 4:16 ` Brian Cain
2022-05-17 4:48 ` Matthew Wilcox [this message]
2022-05-17 4:48 ` Matthew Wilcox
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